How to Make a Diamond Out of Fondant

Written by lisa gaytan-berg
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How to Make a Diamond Out of Fondant
Fondant can be cut and moulded to create shapes that can enhance cakes. (Jupiterimages/Polka Dot/Getty Images)

Fondant is a sugary, mouldable icing that has a consistency similar to clay. You can drape, shape and cut fondant to create beautiful decor for cakes. By covering cakes with fondant, you can create a smooth, silky finish. Decorating cakes with fondant shapes can add a special touch to the creation. Using special cutting tools or shaping the substance into a diamond with your hands, you can manipulate fondant into virtually any size of diamond.

Skill level:

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Things you need

  • Rolling pin
  • Cornstarch
  • Metal diamond cookie cutter
  • Small paring knife
  • Ruler
  • Pastry brush
  • Water

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    Fondant Cutter

  1. 1

    Lightly cover the counter or other work surface with cornstarch. Cornstarch is essential to keep your fondant from sticking to the counter.

  2. 2

    Roll out the fondant with a rolling pin. Fondant should be at room temperature so it will roll easily without breaking. Roll to 1/8 inch thickness.

  3. 3

    Firmly press your diamond cookie cutter or fondant cutter into the fondant. Gently wiggle the cutter to cut through the fondant cleanly. You can also use a paring knife to cut out a diamond shape with the help of a ruler for an even design.

  4. 4

    Gently remove the excess fondant surrounding your diamond shapes. Carefully cut away any pieces that may tear or ruin your shapes. Attach the diamond pieces to your cake by brushing a light layer of water on the back. The water acts like glue.

    Moulding by Hand

  1. 1

    Cut or pinch off a piece of fondant approximately 2 inches by 4 inches. Roll the fondant between your hands to smooth out the texture. If the fondant begins to stick, sprinkle cornstarch onto it.

  2. 2

    Use your fingers to pinch the edges of the fondant to shape it into a 3D diamond shape. To help you achieve an even edge, use the ruler as a guide for a straight side. Measure to ensure symmetry.

  3. 3

    Attach your diamond shape to your cake by lightly brushing water on the piece with a pastry brush or your fingers.

  4. 4

    Smooth out any cracks or wrinkles in the fondant by running your fingers over the problem areas. Apply a small amount of water if necessary.

Tips and warnings

  • Fondant will dry and crack easily so it is essential to work quickly.

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